Turn the utility process image decoder into a Mojo service.

skia/public/type_converters.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SKIA_PUBLIC_TYPE_CONVERTERS_H_
+#define SKIA_PUBLIC_TYPE_CONVERTERS_H_
+
+#include "skia/public/interfaces/bitmap.mojom.h"
+
+class SkBitmap;
+
+namespace mojo {
+
+template <>
+struct TypeConverter<SkBitmap, skia::BitmapPtr> {
+  static SkBitmap Convert(const skia::BitmapPtr& image);
+};
+
+template <>
+struct TypeConverter<skia::BitmapPtr, SkBitmap> {
+  static skia::BitmapPtr Convert(const SkBitmap& bitmap);
+};
+
+}  // namespace mojo
+
+#endif  // SKIA_PUBLIC_TYPE_CONVERTERS_H_